chAd_chlorophyll.chem:
.br
.cstart

# Example file for 'chem':

# This originates from Computing Science Technical Report No. 122
#   CHEM - A Program for Typesetting Chemical Diagrams: User Manual
#   by Jon L. Bentley, Lynn W. Jelinski, Brian W. Kernighan
#   <http://cm.bell-labs.com/cm/cs/cstr/122.ps.gz>.

# Copyright (C) 2006-2018 Free Software Foundation, Inc.

# This file is part of 'chem', which is part of 'groff'.

# 'groff' is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License (GPL) version 2 as
# published by the Free Software Foundation.

# 'groff' is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

# The GPL2 license text is available in the internet at
# <http://www.gnu.org/licenses/gpl-2.0.html>.

########################################################################

    Mg
    bond 45 ; N
R1: ring5 pointing up put N at 4 double 1,2 4,5 with .V4 at N
         bond up from R1.V1 ; CH3
         bond right from R1.V2 ; CH2CH3
    bond 135 from Mg ; N
R2: ring5 pointing down put N at 3 double 1,2 4,5 with .V3 at N
         bond right from R2.V5 ; CH3
    bond 225 from Mg ; N
R3: ring5 pointing down put N at 4 double 3,4 with .V4 at N
    bond -45 from Mg ; N
R4: ring5 pointing up put N at 3 double 1,5 with .V3 at N
         bond left from R4.V5 ; H3C
         bond up from R4.V1 ; CH
         double bond right length .1 from CH ; CH2
    double bond 150 length .3 from R1.V3
    bond to R2.V4
R5: ring5 pointing 72 with .V5 at R2.V2
         double bond 135 from R5.V2 ; O
         bond down from R5.V3 ; C
         double bond left length .1 from C ; O
         bond down from C ; O
         CH3 left of O
    double bond -25 from R5.V4
    bond down from R3.V1 ; CH2
    CH2 left of CH2
    bond left ; C
    double bond -45 ; O
    bond -135 from C ; C20H39O
    bond left from R3.V2 ; H3C
    double bond -150 length .3 from R4.V4
    bond to R3.V3

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